Electrical relay



Dec. 18. 1928.

R. J. WENSLEY ELECTRICAL RELAY Filed Nov. 15, 1924 [NVENTOR Ray J lwJ/gy BY Patented Dec. 18, 1928. p UNITED STATES *"1,s9s,9o1 PATENT OFFICE;

13.0! J. WENSLEY, or nnonwoon, PENNSYLVANIA, ASSIGNOR ro WESTINGHOUSE ELECTRIC a MANUFACTURING COMPANY, A CORPORATION or PENNSYLVANIA.

ELECTRICAL RELAY.

Application filed November 15, 1924. Serial No. 750,183.

My invention relates to electrical relays and particularly to relays of the telephone type. 7 One object of my. invention is to provide an improved mechanical latching device for maintaining the armature of an electrical relay in an operated position when the coil of such relay is deenergized.

Another object of my invention is to provide simple and eflicient'means for releasing the armature of the relay from its mechanically latched position. I

A still further object of my invention is to rovide simple and efiicient means for at-.

lfitac ing my improved latching device to a relay of an ordinary t pe.

There are other objects of the invention which, together with the foregoing, will be described in the specification which is to follow, taken in conjunction with the accompanying drawing.

In practicing my invention, I provide a latch bar of L shape which may be attached to one end of the relay, the armature of which 2' is to be maintained in a mechanically latched position. Another relay is disposed below the first relay, with its armature disposed in such manner that,;when.the relay coil is en- .ergized, it is adapted to engage and operate 0 the lamb bar attached to the other relay. In all other respects, the relays may -be of a usual andwell-knownconstruction Referring now to the drawings, 7

Figure 1 is a side elevational view of my improved relay;

ig.,2 is an end view of the same;

Fig. 3 is a pe ective view, illustrating the manner in whic the armature of the relay is held in operated position bythe mechanical latching device, and

Fig. 4 is a circuit diagram, illustrating the manner in which my improved relay is operated.

In Fig. 1, the broken lines indicatethe posi- 5 tions of the memberswhen the relay is operated and the mechanical latching device is maintaining the armature of the relay in its operated position. 9

Referring now to Fi 1, 2 and 3, relays 1 and 2 are of the usua type so far as'their principal elements are concerned. The relay 1 is mounted upon a frame or heel piece 3 that is attached, by means of a screw 3, to a supporting plate 4. A metal piece 5, upon I56 which are mounted springs 6, 7, 8 and 9 that are insulated from each other, is attached to V the frame 3 by means of a screw 10. An armature 11 is movably mounted upon the heel piece 3 and is provided, at one end, with a, non-conducting member 12 to engage and co liftthe corresponding end of the spring 6 when the relay coil is energized. The spring 8 is a back-stop spring for maintaining the spring 7 in the proper relationship with respect to the spring 6. The spring 9 merely constitutes the electrical connection for one terminal of the coil of the relay 1. The armature 11 is provided also with a non-conducting member 13 (F 3) to cooperate with a second spring like thattshown in Fig. 1, and disposed parallel to it in the same plane.

A metal plate 14 is attached to one end of the heel plate 3 by means of a screwlo. A latch bar 16 of L shape and of non-magnetic material, is mounted upon the metal plate14 by means of a hinge 17. I

The relay 2 is mounted upon a frame or heel piece 18 that is attached to the supporting plate- 4by means of a screw 19. A metal piece 20, carrying a spring 21, is attached to the frame 18 oi the relay 2 by means of a screw 22. The spring 21 constitutes the electrical connection to one terminal of the coil of the relay 2. An armature 23, having a weighted end 24, is mounted inposition on '85 the heel piece 18 in'suchmanner as to actu- P ate the lower end of the latch bar 16, when operated. I v

The operation is as follows: When the coil of the relay 1 is energized, which may be no effectedby closing its circuit at 28 4),

the armature 11 is actuated and the spring 6 is forced from engagement with the spring 7, whereby the contacts 30 and 31 are separated.

At this time, inasmuch as the armature 23 of the relay 2 is in the position shown in Fig. 1, the upper end of the latch bar 16 is ermitted to swing beneath the correspon ing end of the armature 11 into the position shown in the broken lines in Fig. 1. When the coil-of the relay 1 is deenergized, the latch bar '16 is maintained in the position shown and, consequently, the contact members 30 and 31 remain separated.

To efiect engagement of the contact mem-, bers 30 and 31, it is'necessary to energize the coil of therelay 2 by closing its circuit at 29. When the coil of the relay 2 is energized,

ei. A switching device comprising a relay, an armature carried at one end of and relay ear 16 ininent of the Weighted end 2% to move the latch to its norn'ial position. 'ihe inov latch bar 1 permits the arinart to he operated when said relay is energized,

relay to he restored to normal a latching device at angular form mounted der the in'ii' l e on the end of said relay opposite troin said armature for maintaining said armature in operz'ated pc' tion a'iftcr the decnergization of said relav and electromagnetic in ans for "("lELltiDg Stlitl device to rel also aid arma- 1 coil of the 2 ries the in iatare to i drawing, only one springs has been snov-sn on the ever, it vvill he apis" llltllit, as Well as hi ma be several relay in a \vei My inv'entioi itching device comprising a relay, ire on one end of said relay to he h when the relay is energized, a latel 1;! device mounted relay tn ztisite from n' aintaimngr the armature V on alter the deenergization i, and means controlled by said rela tor releasing the arn'iatnre of A clay com; on said core, a ice cmnprising a relay, end of said relay to be when the relay is energized, ring device mounted on relay ogposite from said i Fi'iHC for maintaining said armature in deencrgization of relay. and means controlled by the secelav for actuating said latching device 10 permit the release of the arn'iature of the t relay.

T. A switching device comprising a relay. .tnre carried on one end of said relay 0 (aicrated thereby when the relay is ena second relay positioned adjacent first relav, a latching device carried on dev and actnat and a end of saic arinatnre 0' position.

it relay ccnipr ed on said core. he, ing Said core to mounted on one en ope:

will the end of said first relay ()PPOSitG from said a mature for latching said arl'i'iature in operto lie operat :tted position, and nieans controlled lrv said d relay for releasing the armature of relay.

In. to tnnony whereof, I have hereunto ari ture for n'iaintainin r ail ,1 the-d my name this 5th day of Novemarniatnre in ope 'att (10- her, 1924i.

cnergization or said leasing and armature.

ROY J. WENSLEY. 

